Definition of Y in English: Y (also y )
noun 1 The twenty-fifth letter of the alphabet.
Example sentences
‘Created by two of todays wittiest, most imaginative minds, The Alphabet from A to Y with Bonus Letter Z! is a sheer delight from A to Z.’ ‘Find fun games, crafts, stories, and other educational activities all related to the letter Y.’ 1.1 Denoting the next after X in a set of items, categories, etc.
Example sentences
‘After Boomers and X's, Here Come the Y's.’ ‘What Comes Next After Generation X? ... I would say, generation Y.’ 1.2 Denoting a second unknown or unspecified person or thing. ‘the claim that chemical X causes birth defect Y’
More example sentences
‘Y denotes a second unknown or unspecified person or thing: the claim that chemical X causes birth defect Y.’ ‘In mathematics, Y is the second in a set of two or three unknowns comprising x, y, and z.’ 1.3 The second unknown quantity in an algebraic expression, usually the dependent variable.
Example sentences
‘In algebra, a variable is a symbol used to represent any number. For example, in this equation:. 2(x+y) = 2x + 2y. x and y are variables.’ ‘By convention, we call the dependent variable y.’ 1.4 Denoting the secondary or vertical axis in a system of coordinates. [in combination] ‘the y-axis’
More example sentences
‘Cartesian coordinate system with the circle of radius 2 centered at the origin marked in red. The equation of the circle is x2 + y2 = 4..’ ‘The horizontal axis is normally labeled x, and the vertical axis is normally labeled y.’ 2 A shape like that of a capital Y.
[in combination] ‘rows of tiny Y-shaped motifs’